where is log file

LAN Yufeng <[email protected]> Thu, 22 Dec 2005 20:12:10 +0800

Newsgroups	gmane.comp.bug-tracking.gnats.general
Message-ID	<[email protected]>

Can I have a log file of all requests recieved by gnatsd server? I need 
it for debug purpose, I want to know what messages are receicved. Or 
should i use tcpdump?

Many thanks,
Lan Yufeng